H/T to Lumo, who sent me to the Wikipedia page for Las Cruces:
Census 2010 data
As of the 2010 census Las Cruces had a population of 97,618. The ethnic and racial makeup of the population was: 34.3% White American 2.4% African American or Black 1.7% Native Americans 1.6% Asian 0.1% Native Hawaiian and Other Pacific Islander 3.5% Two or more races 56.8% Hispanic and Latino Americans (Hispanics may be of any race)
As of the census of 2000, there were 74,267 people, 29,184 households, and 18,123 families residing in the city. The population density was 1,425.7 people per square mile (550.5/km²). There were 31,682 housing units at an average density of 608.2 per square mile (234.8/km²). The racial makeup of the city was 69.01% White, 2.34% African American, 1.74% Native American, 1.16% Asian, 0.07% Pacific Islander, 21.59% from other races, and 4.10% from two or more races. Hispanic or Latino of any race were 51.73% of the population.
From this one might suspect that Las Cruces has seen a dramatic decline in "White" population. That's certainly not the case. If anything, the opposite, as our city is flooded with (nearly all white) immigrants from California and the cold regions. What is probably changing is the percentage of Hispanics identifying (also) as White. Virtually all local Hispanics are of mixed European and Native American ancestry. There are old Hispanic families here with names like Singh and Johanson as well as old, predominantly anglophone families that trace their ancestry back to the first Spanish explorers and settlers. The rate of intermarriage between Hispanics and anglophones is very substantial.